Home / 86,941.60-130,412.40-40,285.60

Finding the Fourth Proportional to 86,941.60, 130,412.40 and 40,285.60

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Solution

The fourth proportional to 86,941.60, 130,412.40 and 40,285.60 is: 60,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,941.60 : 130,412.40 = 40,285.60 : x
  2. Step 2: Convert to fraction form
    86,941.60/130,412.40 = 40,285.60/x
  3. Step 3: Cross multiply
    86,941.60x = 130,412.40 × 40,285.60
  4. Step 4: Simplify right side
    86,941.60x = 5,253,741,781.44
  5. Step 5: Solve for x
    x = 5,253,741,781.44/86,941.60
  6. Step 6: Final answer
    x = 60,428.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.